Story Structure — 4 Plot Phases
A Wound From Youth
A humiliating school incident begins with rejection, a private kiss, and a false accusation. The resulting punishment destroys the student's life and establishes the emotional origin of the later violence.
Key Events
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Valentine Dance Invitations — An outcast student asks four popular girls to dance on Valentine's Day.
Location: San Francisco junior high school
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Cruel Rejections — Three girls reject the student cruelly, while another gives a noncommittal response.
Location: School dance
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A Kiss Behind Bleachers — An awkward girl accepts the invitation, and the pair kiss away from the dance.
Location: Behind the bleachers
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False Accusation — After boys mock the couple, the girl falsely claims that the student attacked her.
Location: School grounds
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Expulsion And Institutionalization — The accusation and later statements lead to expulsion and eventual institutionalization.
Location: School and institution
Cards From The Past
Thirteen years later, a masked killer begins targeting people connected to the old incident. Threatening cards and a laboratory murder force the survivors to confront their buried history.
Key Events
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Threatening Valentine Card — Thirteen years later, a medical student finds a threatening Valentine's card after an unsuccessful date.
Location: UCLA medical laboratory
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Cupid Mask Murder — A masked stalker kills the medical student, and the killer's nose bleeds afterward.
Location: UCLA medical laboratory
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Failed Speed Dating — A speed dating event fails, while Jason Marquette is connected to an unsuccessful date. Characters: Jason Marquette
Location: San Francisco
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Funeral Questioning — Four women are questioned by detectives at the funeral following the laboratory murder.
Location: Funeral service
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The JM Cards — Three women receive threatening Valentine's cards signed with the initials JM.
Location: San Francisco residences
Evidence In The Shadows
A second murder, police questioning, and an admission about the original lie expose the group’s guilt. Erased records and another killing deepen uncertainty about the killer’s identity.
Key Events
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Exhibit Warning — At an art exhibit, a woman accuses a guest of being a con artist.
Location: Artist's exhibition
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Arrow Attack In Maze — The masked killer corners a woman, shoots her with multiple arrows, and leaves her in a dumpster.
Location: Exhibition maze
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Suspects Are Identified — The women disclose their earlier harassment, and Jeremy and Jason become investigative suspects. Characters: Jason Marquette
Location: Police investigation
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Confession About 1988 — One woman admits that she fabricated the original attack story to protect her reputation.
Location: Private residence
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Erased Identity Records — Detective information reveals a house-fire tragedy, while all records of Jeremy have been erased.
Location: Police records
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Hot Iron Killing — A voyeur breaks into an apartment, and the killer bludgeons him to death with a hot iron.
Location: Apartment
Blood At The Estate
A Valentine's party becomes a massacre as suspicion turns inward. A severed head, a hidden gun, and the masked attack lead directly to the final confrontation.
Key Events
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Party At The Estate — A Valentine's party is held at an estate while a guest demands the return of an investment.
Location: Dorothy's father's mansion
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Estate Massacre — The investor, a party guest, the host's boyfriend, and a maid are killed at the estate.
Location: Dorothy's father's mansion
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The Pond Discovery — A woman discovers a detective's severed head in the pond and suspects her boyfriend.
Location: Estate pond
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Gun In The Study — Frightened by a request to dance, a woman flees and finds a gun in the study.
Location: Father's study
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Masked Attacker Shot — The masked killer attacks, but a man shoots the attacker before removing the mask.
Location: Estate grounds
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Identity And Love Revealed — The mask reveals the party host as the killer, while the rescuer explains the trauma and confesses lasting love.
Location: Estate grounds
Four friends start to receive morbid Valentine cards and realise they are being stalked by someone they had spurned 13 years ago. A masked killer is on the loose and Valentine's day is soon approaching.